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Hydrogen in nanopetals

18.11.2011

A new nano-object made of magnesium and palladium is a potential storage of hydrogen. In addition to such nano-objects as tubes, balls, spirals or bars, nanopetals appeared. Their main advantage is a huge surface, which means that these objects are well suited for storing something on it - for example, hydrogen.

Similar petals were made by researchers from the Rensselaar Polytechnic Institute, led by Professor Kwo Chin Bong. Magnesium vapor was directed at an angle to the substrate, and magnesium petals were obtained hundreds of microns in size and tens of nanometers thick. Then a thin film of palladium was applied to them - this element willingly forms hydrides.

The main advantage of the new material was its ability to release hydrogen at a low temperature - when heated to only 67-100°C. Usually, metal hydride hydrogen storage devices require much more heating.

Tests showed that ten charge-discharge cycles did not significantly reduce the capacity of such storage. The reason was the oxidation of the petals. "Now we will work on the durability of the material," says Prof. Vaughn.

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Hydrogen crossover Audi H-Tron Quattro 12.01.2016

Audi at the North American International Auto Show in Detroit for the first time demonstrated the concept crossover H-Tron Quattro, powered by hydrogen.

The power plant of the car combines a block of hydrogen fuel cells and a battery. An electric motor with a power of 90 kW (121 horsepower) is installed on the front axle, and a power of 140 kW (188 horsepower) is installed on the rear axle.

Audi claims that the crossover can accelerate from 0 to 100 km/h in less than 7 seconds. At one gas station, the car can cover a distance of up to 600 km; replenishment of hydrogen reserves takes approximately four minutes.

The H-Tron Quattro also showcases advanced self-driving and automatic parking technologies. Audi's autopilot system will debut on the next-generation Audi A8 executive sedan due in 2017. The technologies of this system can control the car during parking or driving in heavy traffic with frequent stops and starting on the highway at speeds up to 60 km/h.

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